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TECHNICAL

SPECIFICATIONS

REGULATORY

APPROVALS

The fi re systems help half of residents escape. Help 

to old people, men, women and children shall be given 

since they are always the victims. 

Smoke alarms detectors are not foolproof, they can’t 

prevent or extinguish fi res, and they are not a substi-

tute for property or life insurance. You need buy some 

fi refi ghting facilities.

Sometimes the smoke is blocked by objects and can’t 

reach the detector, and if the wind blows the smoke 

away from the detector, the unit won’t work either.

LIMITATIONS

MUTING AN ALARM

The sound alert of the UN-WSM_RND could be muted 

for fi ve minutes. After fi ve minutes, if the

UN-WSM_RND continues to detect smoke, the alarm 

resumes. To mute the alarm, press the TEST/MUTE 

button.

Detection method: 

Photoelectric smoke chamber

Data Protocol    

UN-RF 2-way

Modulation Type 

GFSK with 5 frequency & LBT

Frequency            

868MHz

Transmit Power (Typ.)  23dBm

Events Transmission   Alarm, Tamper, Supervision,  

  Battery 

status

Detection Sensitivity:  2.3+1.2%/ft

Alarm Sound Level:  

≥85 db at 3 m

Range in open space  >500m

Batteries                

Pack of 2 Lithium 1.5V, 

  Size: 

AA

Batteries Model  

Energizer L91

Battery life expectancy  ≥ 2 years

Current Consumptions:

• 

Standby 

5mA (Keep Alive every 7min)

• 

Alarm 

~400 mA

• 

Low Battery 

~2.5VDC

• 

Cut Off Batery   ~2.3VDC

Tamper Switch                 Bracker removal

Operating     

-10°C to +50°C

temperature

Dimensions    

125mm diameter x 

  38mm 

deep

Weight (inc. battery)  235 gr.

The UN-WSM_RND conforms to the essential

requirements set out by:

• 

EMC directive:1999/05/EC

• 

LVD directive: 2014/35/EU

• 

RoHS2 directive: 2011/65/EU

Harmonized Standards applicable to these products

are:

• 

EN 301 489-6: V1.4.1(15)

• 

EN 301 489-1: V1.9.2(11)

• 

EN 60950-1:2006 / A11(09) / A1(10) / A12(11)/ 

A2(13)

• 

IEC60950-1:2005/A1(09)/A2(13)

• 

EN 14604:2005/A1(08)

WARNING

1. Never use an open fl ame of any kind to test your 

detector. You may set fi re to damage the detector as 

well as your home. The built-in test button 

accurately tests all detector functions. This is the 

only correct way to test the unit.

2. To stop a nuisance alarm, open a window or fan 

the air around the detector to get rid of the smoke. 

The alarm will turn itself off when the smoke is gone. 

If nuisance alarms persist, attempt to clean the 

detector as described in this manual.

3. Do not stand close to the detector when the alarm 

is sounding. The alarm is loud in order to wake you 

up in an emergency. Too much exposure to the horn 

at close range may be harmful to your hearing.

4. Never try to avoid false alarms by disabling the 

detector.

WARNING

WARNING

5. Dust can damage the smoke detector’s sensitivity. 

The detector needs to be cleaned at least once a 

year as described in this manual.

6. If the alarm horn produces a loud continuous 

sound when you are not testing the unit, this means 

the detector has sensed smoke or combustion 

particles in the air. Verify that the alarm is a result 

of a possible serious situation, which requires your 

immediate attention.

7. The alarm could be caused by a nuisance situa-

tion. Cooking smoke or a dusty furnace, sometimes 

called “friendly fi res” can cause the alarm to sound. 

If this happens, open a window or fan the air away to 

remove the smoke or dust. The alarm will turn off as 

soon as the air is completely clear.

8. This smoke detector is designed for use in a 

single residential unit or small buildings only, which 

means that it should be used inside a single-family 

home, apartment or small buildings. Smoke detec-

tors, placed in common areas outside the individual 

living unit, such as on porches or in hallways, may 

not provide early warning to residents.

9. This smoke detector, if used as a stand-alone unit, 

will not alert people who are hard of hearing.

10. Changes or modifi cations to this equipment 

not expressly approved by the party responsible for 

compliance (Crow Electronic Engineering Ltd.) could 

void the user’s authority to operate the equipment.

11. Batteries of this device are not replaceable. Re-

commanded date for device replacement ≥2 years 

from fi rst operation date.

DETECTOR TESTING

After the learning process and installing the 

smoke detector, we recommend performing and 

transmission tests.

Alarm Test

Press shortly the “Test” button (see fi g. 2) - the smoke 

detector shall activate 3 beeps and Green LED, 

indicating that the device is in the normal mode.

If the test fails, stop using the detector immediately.

WARNING – DON’T TEST IT WITH FIRE !!!

Tamper Transmission Test

Removing the smoke detector from its bracket will 

cause tamper transmissions.

Verify the UNii keypad (info) indicates “Tamper”. Verify 

receiving the indication in the UNii manager software, 

by entering to the diagnostics menu.

Communication signal test

Check the RF Communication quality. Special 

indication at the UNii keypad that displays 

continuously the received RF signal quality.

Never use water, cleaners or solvents to clean your 

Smoke detector since they may damage the unit. Use 

a soft brush only. Remove the device from its bracket 

(by turn it counter clock wise) and carefully remove 

any dust from the Smoke’s openings around the 

device (see below fi gure) at least once a year.

REGULAR MAINTENANCE 

/ CLEANING

OPENINGS

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